Recent Comments on NNDC Web Services

Response to Chris from Boris, 5/5/2008 (pritychenko at bnl.gov)

Dear Chris,

Thank you for using our Web Services. Astrophysical Reaction Rates Web application was developed and extensively tested for Maxwellian-averaged cross section (MACS) calculations in astrophysical range of energies (1-1000 keV).

However ENDF libraries contain data from 10-5 eV to 20 MeV and Web application works there too. If you will provide room temperature energy (0.0253 eV) the MACS is 98.17 b for 235U. You have mentioned that this number is close to 2200 m/sec (n,gamma) cross section in JEFF of 98.67 b.

According to "Atlas of Neutron Resonances" and ENDF/B-VII.0 library the MACS (E=0.0253 eV)is equal to 2200 m/sec cross section multiplied by Westcott factor (0.9956 in this case): 98.67*0.9956=98.236 b
that is very close to 98.17 b: 98.236/98.17=1.00067.

In fact our difference is less than 0.1%. It may originate from numerical integration issues near the lower end of the ENDF library or pointwise ENDF library data that were produced from the original ENDF library.
Sincerely,

Boris.

Response to Florent from Alejandro, 4/17/2008 (sonzogni at bnl.gov)

The problem with NuDat is fixed, thanks for pointing it out. The issue was a gamma ray with a Mixing Ratio greater than 4000, which was causing the code to crash.

Alejandro

Response to Alejandro from Florent, 4/18/2008 (florent.haas at IReS.in2p3.fr)

Thanks.FH

Response to Praveen from Boris, 02/03/2008 (pritychenko at bnl.gov)

Praveen,

In general, only data for even-even isotopes are compiled in the B(E2) evaluation and data for odd isotopes may be found in the ENSDF database.
In oxygen case experimental measurements of B(E2) values exist for O20-22 and you have to use several theoretical predictions for the rest.

The ratio between B(E2) transitions up and down is very simple: B(↑) = (2J + 1)B(↓)/(2J₀+1), where J0 and J are spins of the lower and upper levels, respectively.
Thank you,

Boris.

Response to Ali from Boris, 8/21/2007 (pritychenko at bnl.gov)

Dear Ali,

You request is very broad and you probably have to narrow the scope of your nuclear data search. Try to be more specific and try to use International Atomic Energy Agency in Vienna, Austria (http://www-nds.iaea.org/) because they are responsible for your country.
You may contact Ms. Georgina Bush (email: g.bush at iaea.org) at IAEA and she will be happy to assist you.
Thank you,

Boris.

Response to Laurence from Boris, 7/24/2007 (pritychenko at bnl.gov)

Dear Laurence,

I just consulted with Dr. Michal Herman and he defined absorption as total cross section minus shape elastic (Optical nuclear model). Or in more simple language: absorption is a combination of many reaction channels while capture is just a single reaction channel. Here, for simplicity, I assume that neutron capture is a single reaction channel and ignore nuclear structure effects.
Thank you,

Boris.

Response to Klaus from Boris, 7/18/2007 (pritychenko at bnl.gov)

Dear Dr. Hermanspahn,

Address that you provided is correct and browseds.jsp file is located on our Web server. However our Web content is designed for regular Web browsers and we never tested it for multiple retrievals such as "wget" that can be a security issue.
If you will try to access "http://www.nndc.bnl.gov/ensdf/browseds.jsp?nuc=%1&class=Arc" it will not work; the simple workaround is to remove a wild card (%) from the URL and try the following: "http://www.nndc.bnl.gov/ensdf/browseds.jsp?nuc=1&class=Arc". Database retrieval code was previously changed and it cannot handle wild cards any longer. As the result of this your address fails.
Thank you,

Boris.

Response to Greg from Boris, 7/13/2007 (pritychenko at bnl.gov)

Dear Greg,

Thank you for the interest in Q-value calculator improvements. To add Coulomb Barrier Threshold one has to add a parameterization of the Coulomb and Nuclear potentials to get the l=0 Coulomb barrier. Unfortunately parameterization is not straightforward in this case and we avoided it. We definitely can return to this issue in the future.
Sincerely,

Boris.

Response to Bruce from Tom, 6/13/2007 (burrows at bnl.gov)

Dear Dr. Barrett,

I believe you will find what you want in http://www.nndc.bnl.gov/masses/mass.mas03. This is a formatted ASCII file containing the mass excess, binding energy/A, beta-decay energy, and atomic mass for 1n through 293118 from the 2003 Atomic Mass Evaluation.
Sincerely yours,

Thomas W. Burrows

Response to Bruce from Tom, 6/13/2007 (burrows at bnl.gov)

Dear Dr. Barrett,

Here are a few lines from the header of mass.mass03 describing the format of the file: col 1 : Fortran character control: 1 = page feed 0 = line feed format : a1,i3,i5,i5,i5,1x,a3,a4,1x,f13.5,f11.5,f11.3,f9.3,1x,a2,f11.3,f9.3,1x,i3,1x,f12.5,f11.3,1x cc NZ N Z A el o mass unc binding unc B beta unc atomic_mass unc Warnings : this format is not identical to the one used in Ame1993 and Ame1995 in particular "Mass Excess" and "Atomic Mass" values are given now, when necessary, with 5 digits after decimal point. also, the "Binding Energy" column is replaced by a "Binding Energy per A" one. decimal point is replaced by # for (non-experimental) estimated values. * in place of value : not calculable I think it should be fairly easy to translate the data in this file to the format needed by your programs.
Sincerely,

Tom Burrows

Response to Georges from Alejandro, 6/8/2007 (sonzogni at bnl.gov)

Hi Georges,

Charge radius information is not available in NuDat. I suggest you use NSR, www.nndc.bnl.gov/nsr, to search for the relevant literature. Go to the index search, http://www.nndc.bnl.gov/nsr/indx_form.jsp, select Nuclide and type 40Ca, then select subject and type RADIUS, then click search. You can check on 'Required measured quantity' at the top of the page to select only experimental articles.

If you are interested in the radius to perform optical model calculations, you may wish to check RIPL, http://www-nds.iaea.org/RIPL-2/.
Cheers

Alejandro

Response to Jamie from Alejandro, 2/27/2007 (sonzogni at bnl.gov)

Hi Jamie,

Some levels have well defined energies, that is, they are known in absolute values. Some others dont, so we use X, Y or Z. Imagine that you have 2 levels connected by a 100 keV gamma, and the lower level has an unknown energy value, so we will write them as X and X+100. This happens often with levels that decay with a very low value of radiation that falls below the detectors thresholds.
Hope this helps, if not, let me know.

Alejandro

Response to Vijay from David, 2/20/2007 (winchell at bnl.gov)

Dear Dr. Sai,

Over the years, NSR has indexed specific "subject" strings in the keyword abstracts. Certain terms, such as "E(ce)" or "ICC" or "conversion electrons" will create a listing "CE" in the subject index (this is our abbreviation for "conversion electron").
You can search on this using the "indexed search" page http://www.nndc.bnl.gov/nsr/indx_form.jsp
In the "Search Parameters" part of the form, select "subject" from one of the drop-down boxes, and type CE in the text field. In the "initialization parameters" part, you might want to un-check "Primary only" and check "require measured quantity". Then hit the "Search" button to get results. I currently get 4731 matches for this search, for publication dates between 1950 and 2007.
In order to avoid overloading the web server, we currently only allow 100 results per page. If you would like the results as a single text file, let me know and I can generate it for you.
Regards,

David Winchell

Response to Julien from Alejandro, 12/8/2006 (sonzogni at bnl.gov)

Dear Julien,

A few days ago someone requested an excel file with data from NuDat, containing half-life and decay mode information. I'm attaching it since it may be what you need. In this file, the information is collapsed into a single table, as a result there is some repeated info. For instance, there are 2 rows for He-8 because it has 2 decay modes. When you use the NuDat search forms, you can request the output to be "formatted file", which will have fields separated by tabs, with very little amount of HTML tags. Now, if you are planning to calculate complex decay networks as a function of time, you may want to use another product, the decay data library which is part of the ENDF database. Let me know if this is the case.


Alejandro

Response to Aziz from Pavel, 11/28/2006 (oblozinsky at bnl.gov)

Dear Aziz,

Unfortunately, we do not maintain information on electron scattering. Note that all our databases are freely available, see www.nndc.bnl.gov, and I would suggest that you to look into NuDat for structure information on F-19.
Sincerely,

P. Oblozinsky

Response to Laurence from Boris, 11/13/2006 (pritychenko at bnl.gov)

Dear Dr. Hecht,

You selected energy conservation law to test double beta decay processes and I 100% agree with you. It is the most fundamental law in physics that governs double beta decay and all other decays. It is also true that average binding energy per nucleon is decreasing with A when A>50 and daughter nuclei may have lower binding energy then parents.
However double beta decay is a process when two nucleons (2 neutrons or 2 protons) experience simultaneous beta decay by converting into two daughter nucleons: (Z, A) ---> (Z, A+-2) +2e + 2(0)n. Protons and neutrons have different masses; consequently we have to compare masses of parent and daughter nuclei. If mass of daughter is smaller than parent nucleus then double beta decay is possible and the mass difference defines energy released in the decay.
Using this rule it is easy to calculate that Cd-113 will beta decay into In-113 releasing 320 keV, Te-128 will experience double beta decay by releasing 868 keV and Zn-70 will experience double beta decay by releasing 998 keV. Transition energy in these isotopes is relatively low and probability of finding double beta decay is low too, only double beta decays in Te-128 are observed at the present time.
For complete list of double-beta decay transitions please visit “BB Transition” page at the National Nuclear Data Center website http://www.nndc.bnl.gov/bbdecay/indexw.jsp and simply type nucleus of interest in the “Nucleus” textbox and click on the “Submit” button. It will display transition energies for beta, double beta and alpha decays and if energy is positive then particular transition is possible.
Sincerely,

Boris.

Response to Robert from David, 10/26/2006 (winchell at bnl.gov)

Dear Mr. Godes,
Boris Pritychenko forwarded your email to me. Files in the "useroutput" area are generated dynamically from the database, and are only stored for a few days. If my records are correct, the file you were looking for would have been created on October 16, and automatically deleted a few days later. So, if you were trying the link after the 19th or so, you would get a "file not found" error. It would be useful to me to have more information regarding when you tried the link, and where you were linking from (that is, if people are posting these links as if they are permanent files, we need to look into it).
Regards,

David Winchell

Response to Darian from David, 10/11/2006 (winchell at bnl.gov)

Dear Darian,
I believe the problem you found with HTML generation from the 105Rh dataset has been fixed. Let us know if you find any further problems.
Regards,

David Winchell

Response to Bogdan from Boris, 9/28/2006 (pritychenko at bnl.gov)

Dear Dr. Maglich,
Try the following for Carbon:
1) Access Evaluated Nuclear Data File page: http://www.nndc.bnl.gov/endf
2) Enter Carbon inputs (C-0; n,inl; sig) plus select ENDF/B-VI.8 library and click submit
3) On the next screen select all data and click on the plot to plot it. You can click on other buttons to retrieve text data
4) If you clicked on the plot you will see plotted data. You can access plotted data by clicking on the plotted data link

Try the following for Oxygen:
1) Access Evaluated Nuclear Data File page: http://www.nndc.bnl.gov/endf
2) Enter Carbon inputs (O-16; n,inl; sig) plus select ENDF/B-VI.8 library and click submit
3) On the next screen select all data and click on the plot to plot it. You can click on other buttons to retrieve text data.
4) If you clicked on the plot you will see plotted data. You can access plotted data by clicking on the plotted data link.
Please let me know if you still have problems.
Thank you,

Boris.

Response to Paddy from Norman, 9/22/2006 (holden at bnl.gov)

Boris:

I attach a short file to try to explain how the nomenclature was derived a couple of centuries ago.

Norman

Background Information on the Chemical Nomenclature

The history behind the use of the symbols O2 and H2 for the elements oxygen and hydrogen is a little complicated. Research work on the atomic theory of matter and the concept of the Atomic Weights originated with John Dalton at the beginning of the Nineteenth Century. However, atomic weight values were often determined from the percentage of each element present in a compound. Unfortunately, this ratio provided the equivalent weight not the atomic weight because the valence was unknown. The valence is a measure of how many atoms of one element in the compound combine with an atom of the other element, e.g., is water HO or H2O? Thus, equivalent weight of an element in any compound is equal to the atomic weight of the element divided by the valence of the element in that compound.

In 1811, an Italian physicist, Amedeo Avogadro, solved this problem using Gay-Lussac's determination that gaseous elements combine in chemical reactions in simple (numerical) volume ratios. He also hypothesized that equal volumes of different gases under the same conditions contain equal numbers of molecules. Avogadro assumed that common gaseous elements consisted of two atom molecules. However, Avogadro used the term molecule throughout his paper either alone or with qualifying adjectives, integral, constituent and elementary. In those days, the term atom and molecule were used interchangeably and the readers thought that there could be ½ atoms and ignored Avogadro's explanation.

Finally, an Italian chemist, Stanislao Cannizano, presented Avogadro's solution to the world's leading chemists at the First International Scientific Conference in Karlsruhe, Germany (3-5 September 1860). One result of this lecture was that the values of the atomic weights were clarified. Two members of the audience, Lothar Meyer and Dmitri Mendeleev, were both later able to construct Periodic Tables of the chemical elements.

The Swedish chemist, Jons J. Bezelius, originally used the first letter of an element's name in Latin to symbolize that element, with as second letter used for those elements, which had the same first letter. He used a superscript to design the proportion of the elements in a compound, e.g., SO3. After his death, scientists began to use subscripts rather than super scripts for this designation and this is still true today.

This is a somewhat simplified version of why hydrogen and oxygen and other diatomic molecules are written as H2 and O2, rather than as H and O. We now know that each of these molecules consist of two atoms but the above description is an attempt to explain historically how the symbols were originally developed.

Response to Chris from Boris, 9/7/2006 (pritychenko at bnl.gov)

Chris,

One of the most fundamental laws in physics is about energy conservation. Nuclear reactions and corresponding Q-values are directly based on this law. Positive Q-value is equal to energy that will be released in the reaction and negative Q-value indicates insufficient energy for the reaction to occur.

Quite often nuclear reaction energy is released as gamma rays plus kinetic energy of the products. Nuclear reactions can make many different products (different reaction channels). Each reaction channel has its own probability (cross section) and threshold. Different reaction thresholds result in different Q-values. Therefore when proton strikes N-15 it produces products that are listed by Qcalc.
Thank you,

Boris

Response to Gordon from Boris, 7/17/2006 (pritychenko at bnl.gov)

Gordon,

Please describe which database you tried to access and we will try to help you. I could not reproduce your "blue screen of death" experience. Anyway, radionuclide data can be accessed directly from NuDat2 database: http://www.nndc.bnl.gov/nudat2. Please let me know if you have any problems.
Thank you,

Boris

Response to Christine from Alejandro, 7/10/2006 (sonzogni at bnl.gov)

Dear Christine,

We are flattered indeed that images from our web site will be used in a book from National Academy Press, I'm attaching 2 images, one in color and the other in black and white. Let me know if you'd need higher resolution, we'll be glad to assist. Regarding the citation, we'd appreciate something like "Image obtained from the National Nuclear Data Center's Chart of Nuclides database, www.nndc.bnl.gov/chart"
With best regards,

Alejandro Sonzogni

Response to Naomi from Alejandro, 6/20/2006 (sonzogni at bnl.gov)

Dear Dr Harley,

There is a new recommended half-life value for 218Po, 3.098 min 12, from a 2006 evaluation. 3.098 min 12 means 3.098 +- 0.012 minutes. It is a weighted average of 1982Va09 (3.11 min 2) and 1986Po17 (3.093 min 12). Other: 3.05 min (1931Cu01).

Where:
1982VA09: Phys.Rev. C25, 2802 (1982) J.R.Van Hise, D.E.Martz, R.A.Jackson, D.Y.Kunihira, E.Bolton

218Po Half-Life
and 1986Po17: At.Energ. 60, 288 (1986); Sov.At.Energy 60, 345 (1986) V.G.Potapov, P.S.Soloshenkov

Half-Life of 218Po
We are not aware of any retracted value of half-life, at least, it doesn't appear in our literature databases. We will appreciate if you have information on this regard. Also, let us know if you think that a new measurement of the half-life should be performed.

With best regards,

Alejandro

Response to Leila from Pavel, 6/13/2006 (oblozinsky at bnl.gov)

Dear L. Yettou,

The NNDC is not distributing these codes. In case you would be interested in EMPIRE you can download it from our webpage. The codes that you mentioned are distributed by the NEA Data Bank, Paris, see the link on our webpage.

Sincerely,

Pavel Oblozinsky

Response to Jag from David, 6/12/2006 (measday at physics.ubc.ca)

Thanks; that is excellent. It must have been quite a lot of work to do all that. It is certainly more helpful for those who use these energies as calibrations
Regards,

David Measday

Response to David from Jag, 5/25/2006 (tuli at bnl.gov)

David,

Thanks. As you have noted it is some times difficult to update all data bases at the same time. The ENSDF T1/2 for 39Cl is based on the latest (2006) evaluation while the value in NuDat is based on the Nuclear Wallet Cards value which has not been updated to the ENSDF value as yet. Please use the ENSDF value in this case.

Regards,

Jag

Response to Constantin from Boris, 5/23/2006 (pritychenko at bnl.gov)

Dear Mihai

Thank you for pointing out the problem. It is fixed now and you can access adopted levels of 64Zn. Please let us know if you have any problems.

Boris

Response to Allen from Boris, 5/03/2006 (pritychenko at bnl.gov)

Allen,

Recently photofission was extensively studied by Dr. Pavel Oblozinsky (BNL) and Dr. Mark Chadwick (LANL). You may search on Google for "photofission & Oblozinsky".
Results on photofission testing were reported by Dr. White at the CSEWG meeting in November of 2005: http://www.nndc.bnl.gov/proceedings/2005csewgusndp/. You may look through other presentations to find more data.
Thank you,

Boris

Response to John from Jag, 4/17/2006 (tuli at bnl.gov)

John,

Yes, you can. Please go to NUDAT on our web site and choose levels and gammas option.
Best wishes,

Jag

Response to Balraj from Alejandro, 3/24/2006 (sonzogni at bnl.gov)

Hi Balraj,

We didn't have the option of ordering a search result by level half-life. We didn't think about it and no one requested it. Now we do thanks to you. If you go to the level search or to nuclear wallet card search you'll see it.
Best regards

Alejandro

Response to David from Jag, 3/23/2006 (tuli at bnl.gov)

Dave,

As far as I can tell the latest value (Wallet Cards) is based on PTB work (Schrader) Jl of Applied Radiation and Isotopes, 60 P 317 (2004). They tabulate many of the recent values and they seem to agree with each other
Regards,

Jag.

Response to John from Jag, 3/23/2006 (tuli at bnl.gov)

NNDC distributes complete ENSDF twice a year to evaluation network. You may contact Dr. Jagdish Tuli, Tuli at bnl.gov, for the latest distribution.
Regards,

Jag.

Response to John from Jag, 3/24/2006 (tuli at bnl.gov)

John,
I am glad it worked out , I will put you on my distribution list.
Regards,

Jag

Response to Vladimir from David, 2/16/2006 (winchell at bnl.gov)

Dear Dr. Tretyak,

Thanks for your note. Do to time limitations, we sometimes choose articles from NIMA based on title, and so sometimes miss ones with physics content, when the title makes it look like it has purely technical nature. I will sometimes look more carefully, but clearly I missed these. Thanks for bringing them to our attention, I will look into adding the articles to the database.
Regards,

David Winchell

Response to Logan from Alejandro, 2/9/2006 (sonzogni at bnl.gov)

Mr. Logan,
The Nuclear Wallet Cards information is not enough to follow a radioactive decays. If you go to http://www.nndc.bnl.gov/nudat2/ type '130I' on the text box in the upper right side of the page and click 'go', you will see information for this nucleus in the bottom part of the page. Now click on 'Decay Radiation' and a new window will appear, with is basically the following address: http://www.nndc.bnl.gov/nudat2/decaysearchdirect.jsp?nuc=130I Full decay information can be obtained from this page. In particular, if you click on the level schemes you can find out the levels populated in the decays. The problem of describing the evolution of a number of radioactive nuclei can get complex. We do have codes written in Java that can be of help to access our libraries and present the information in a way that is more convenient to you. For instance if you are interested in solving the network of decays in something big like a supernova, you may wish to use the decay data library in the Evaluated Nuclear Data File (ENDF). For a smaller problem, NuDat should be ok.
Hope this helps, if not, let me know.

Alejandro Sonzogni.

Response to Yossi from Boris, 2/9/2006 (pritychenko at bnl.gov)

Dear Dr. Eisen,
I will suggest the following steps:

• Access NNDC CSISRS database at http://www.nndc.bnl.gov/exfor
• Provide the following inputs: Target=19F, Product=16O, Quantity=cs, Energy from=6 units MeV
• Click on the "Submit" button
• On the second screen you will see two references on 19F(p,alpha gamma)16O measurements. You also can access compilated results clicking on "T4" or "X4" symbols on this screen

Thank you,

Boris.

Response to Trevor from Alejandro, 1/30/2006 (sonzogni at bnl.gov)

Hi Trevor,
The energy of the X-rays come from the Table of Isotopes. The intensity comes from a calculation performed in NuDat. Basically, you first get the number of vacancies in the K and L shells created by electron conversion and/or electron capture, and then you get the intensities. Keep in mind this is a calculation, that is, the intensities do not correspond to measured values. If you have and ENSDF file with no gamma multipolarities, and therefore no conversion electrons, and which is not dealing with a Electron Capture decay, then there will be no X-rays reported. Hope this helps, if not, please let me know.

Alejandro Sonzogni

Response to John from Boris, 1/17/2006 (pritychenko at bnl.gov)

John,
This is not a critical error, this is a message from Apache Web server indicating that Tomcat server is restarting. You have to refresh your browser a few times and NNDC site will be back. In any case thank you for informing me, we will try to do better.
Thank you,

Boris.

Response to Adriana from David, 1/3/2006 (winchell at bnl.gov)

Dear Dr. Banu,

We do not enter articles for a given issue until the issue is complete. Typically the new Phys.Rev. C articles are added to the NSR database on the first or second Friday of the month. I am currently working on the December issue, and hope to add the articles to the database this Friday. We did receive your suggested keywords, on November 8. Note that we do not know the manuscript number, which is why we ask that the title and first author be given in the email (which you did do). Let me know if I can be of further assitance.
Regards,

David Winchell

Response to Aldo from Boris, 11/30/2005 (pritychenko at bnl.gov)

Dear Mr. Lazzarini,
NNDC mass calculations are based on the Atomic Mass Evaluation 2003 by G. Audi or Nuclear Wallet Cards 2005 by J.K. Tuli. If you will take atomic mass values from AME 2003 by G. Audi and use (2mn + mp - mt) formula you will get 8.4818 MeV. You may also take Mass Excesses from AME 2003 or Nuclear Wallet Cards 2005 and again you will get 8.481 MeV. I will recommend to use Q-value calculator for this purpose: http://www.nndc.bnl.gov/qcalc. Thank you, Boris.

Response to Aldo from Boris, 12/06/2005 (pritychenko at bnl.gov)

Dear Aldo,
I forwarded your request to ENDF database manager M. Herman. He will correct data in Table 2/Appendix H of the ENDF-102 Data Formats and procedures manual. Thank you, Boris.

Response to Natalia from Boris, 11/22/2005 (pritychenko at bnl.gov)

Natalia, I forwarded your comment to ENSDF database manager. J^π level assignment is corrected.

Response to Wayne from Boris, 11/18/2005 (pritychenko at bnl.gov)

Wayne, Your question is about dosimetry and nuclear radiation shielding. Health or medical physicists will be able to provide you with all necessary information. You may contact them at http://www.radiationphysics.com.

Response to David from Alejandro, 11/16/2005 (sonzogni at bnl.gov)

You can retrieve them from the NuDat search, http://www.nndc.bnl.gov/nudat2/indx_adopted.jsp, requiring that T1/2 be greater than a given value and selecting "Formatted File" as output. For instance, I'm attaching a file with T1/2 greater than 1 milisecond. The fields are tab-separated. Hope this helps, if not, let me know. Alejandro Sonzogni

Response to Stephen from Boris, 11/15/2005 (pritychenko at bnl.gov)

Stephen, We do not have atomic mass data in speadsheet format. However I will advise you to download original files in text format from http://www.nndc.bnl.gov/masses/. Text files can be imported to Excel program through "Data|Import External Data|Import Data" wizard. I hope I answered your question.

Response to Gerald from Boris, 11/15/2005 (pritychenko at bnl.gov)

Dear Mr. Wagner, History of the origin of chemical elements will be updated in the first quarter of 2006. Dr. Holden is currently working on other projects.

Response to Zdenek from Boris, 11/4/2005 (pritychenko at bnl.gov)

Dear Dr. Cimpl, I forwarded your comment to authors of superheavy nuclei evaluation. They will get in touch with you. Thank you, Boris.

Response to Zdenek from Thomas 11/4/2005 (burrows at bnl.gov)

Dear Dr. Cimpl: I have noticed your comment on the superheavy nuclides preprint on the NNDC Web site. Firstly, let thank you for taking the time to post it. This evaluation was not written quickly and was reviewed by a well-respected scientist in the field. If you could be more explicit in where you have found problems it would be useful. What formulations do you find confusing? What mistakes in element names have you found? We have followed the IUPAC nomenclature through Z=111 (Rg) and used the element number above that.

Response to Zdenek from Thomas 11/8/2005 (burrows at bnl.gov)

Dear Dr. Cimpl, Again thank you for sending us your comments. We have corrected all the typographic errors you pointed out; I do not know how many times Mohini and I looked at these and did not catch them. On the other remarks you had:
.................................................................................

I hope this has answered some of the questions you raised. The revised ENSDF (Evaluated Nuclear Structure Data File) has been submitted and it is my understanding that it has been received in time to generate a new manuscript for publication in the Nuclear Data Sheets.

Response to David from Boris on 8/31/05 (pritychenko at bnl.gov)

David, That set of data is available internally only (BNL campus)at: http://www-original.nndc.bnl.gov/~hi_data/h0001.html Thanks, Boris.

Response to Bernd from Alejandro on 8/24/05 (sonzogni at bnl.gov)

Hi Bernd, You may want to try NuDat to get decay information: www.nndc.bnl.gov/nudat2 You can use the chart of nuclei to find the nucleus of your choice, after clicking on it, a link to decay information will appear at the bottom of the chart. Additionally, you can use a decay search form, http://www.nndc.bnl.gov/nudat2/indx_dec.jsp, where you can obtain decay information that satisfy a number of conditions. NuDat and MIRD use the same raw data, but completely different output formats and units. NuDat lists the average beta energies as well as the maximum, which we call "End Point" energies. NuDat also has a interactive decay scheme plot tool. Hope this helps, please don't hesitate to send your comments as we rely on the users input to develop our products. With best regards Alejandro Sonzogni

Response to Greg from Boris on 8/23/05 (pritychenko at bnl.gov)

Hi Greg, PCNuDat is longer supported due to a very limited demand for this product. Currently we do not have a standalone product that can replace PCNuDat. We will advise you to use Web version of NuDat 2.1 (http://www.nndc.bnl.gov/nudat2). It is easy to use and database content is always up-to-date. Thank you, Boris.

Response to Jesus from Boris on 8/18/05 (pritychenko at bnl.gov)

Jesus, I forwarded your request to Said Mughabghab. He promised to calculate your case.

Response to Elena from Boris on 08/15/2005 (pritychenko at bnl.gov)

Hi Elena, Thank you for pointing out the problem with ENDF. It is fixed now and ENDF is back to normal. If you have any questions please do not hesitate and contact us. Thank you, Boris.

Response to Rahim from Dimitri on 07/28/05 (drochman at bnl.gov)

Dear Rahim, There is a really good free software to calculate stopping power : SRIM at http://www.srim.org (for Windows). I hope this help ! Dimitri

Response to Neal Carron from from Boris Pritychenko on 07/26/05 (pritychenko at bnl.gov)

Hi Neal, We currently have a development version of BRICC on our server: http://www.nndc.bnl.gov/bricc. It will be finalized by Fall of 2005. Thanks, Boris.

Response to Gary Tyger from Thomas Burrows on 6/16/05 (burrows at bnl.gov)

Dear Dr. Tyger: I am unaware of any compilations devoted to the specific activities of radionuclides. However, you should be able to calculate the specific activity of the nuclides of interest to you by using the half-lifes available in the Nuclear Wallet Cards module (http://www.nndc.bnl.gov/nudat2/indx_sigma.jsp) of NuDat (http://www.nndc.bnl.gov/nudat2/). Sincerely yours, Thomas W. Burrows

Response to Neal from Boris Pritychenko on June 16, 2005 (pritychenko at bnl.gov)

Hi Neal, We removed Internal conversion calculator from our site because are currently working on improving it using our internal Web server. I will have a definite answer about timeline in a week or two. In addition, we are planning to have recently developed BrIcc in Fall of 2005. BrIcc will eventually replace currently used HSIcc.

Response to Chris from Alejandro Sonzogni on June 13 2005 (sonzogni at bnl.gov)

Hi Chris, Answering your question about how to name nuclides. Most people working in nuclear structure will use '99Tc' rather than 'TC-99'; on the other hand, people working in nuclear reactions will prefer 'TC-99'. The NuDat product, www.nndc.bnl.gov/nudat2 was developed by nuclear structure folk. Now, in the popups we need to minimize the size of the javascripts loaded by the web browser, so it helps to use a shorter name. Cheers Alejandro Sonzogni

Response to Rabee from Boris Pritychenko on 06/08/05 (pritychenko at bnl.gov)

Rabee, this is a nuclear physics question. However, we would recommend you to read the following NDS IAEA document on neutron source reactions: http://www-nds.iaea.org/drosg2000.html. If you will any have further questions then please contact International Atomic Energy Agency in Vienna (http://www-nds.iaea.org/), IAEA is responsible for your country.

Response to Mazdak from Boris Pritychenko on 06/02/05 (pritychenko at bnl.gov)

Mazdak, this is a general nuclear physics question that does not have a simple answer. We will suggest to read INDC Report of I. Angeli: http://www-nds.iaea.org/reports/indc-hun-033.pdf, pages 16-18. This report provides extensive information on this issue and hopefully will answer your question.